if this IS actually IN the FRONT(or even kinda front to side?) under your jaw, then it most definitely would NOT actually be the spinal column/vertbrae you are feeling this at. the esophagus and the trachea actually both lie in FRONT of the spinal column up there TO the jaw. so what you are feeling, depending upon the very 'exacting' location, would be more likely within the soft tissue but 'could be' attatched to some other structure, or actually a simple swollen gland in that side too since our glanRAB ARE in about where it sound like you are describing this at?
a swollen gland would actually be the more 'common' type of reason to 'feel a lump' in that particular area actually. but whatever this is, any 'lumps' we may have or anything you simply do 'feel' within your body that is not 'normally' felt, should just always be evaluated by your doc. generally whenever our bodies are simply trying to fight off some type of infection or virus, the glanRAB can tend to swell up too(you actually have these very same 'lymph nodes" or 'glanRAB' all over your body in various key places that CAN simply swell for specific reasons at times). this just neeRAB a good looksee by your primary doc at this point. all he really has to do is palpate it/feel it, and he should know whether or not this IS just a mere gland. he can also run some simple lab tests on your blood to see if your body even IS fighting off something by just looking at things like your white blood cells count among other stuff. i would NOT overly worry about this, esp in someone your age group? the real chances of this really 'being something more like what you are worried about, really ARE pretty remote, esp if there is no actual history of cancer in your family either and like i mentioned, your age here too. just tell your mom or dad about this so they can get you in to see your family doc to have this checked out. if you ARE also running even a low grade fever at all, that would fit with having a swollen gland and your body going into that 'fight off' mode too? the human body is actually MENT to 'heat up' when fighting anything that sneaks in thru some route of entry into us. it tries to kill off the 'invader' by killing it with heat. thats why we actually will get fevers to begin with.
hope all turns out well for you. but DO get yourself in to see your doc, esp if you are really worried about something like you are here? things in most cases, are never as bad as we may think once we actually just see our docs for a looksee and possible tests too. please do let us know how things are. FB